/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is ThumbsDown.
 *
 * The Initial Developer of the Original Code is Atte Kemppilä.
 * Portions created by the Initial Developer are Copyright (C) 2012
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */


const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;

Cu.import("resource://gre/modules/XPCOMUtils.jsm");

Cu.import("resource://thumbsdown/ThumbsDown.jsm");
Cu.import("resource://thumbsdown/util.jsm");

const SCHEME = ThumbsDown.SCHEME;


/**
 * ThumbsDown service.
 * 
 *  * nsIContentPolicy:
 *    Intercept ThumbsDown urls (see components/protocol.js)
 *    and start ThumbsDown script install (ThumbsDown.installScript()).
 */
function ThumbsDownService()
{
    // empty
}

ThumbsDownService.prototype =
{
    classID: Components.ID("{5ec6c138-1515-11e2-82a6-20cf30ccb8fb}"),
    
    contractID: "@thumbsdown/service;1",
    classDescription: "ThumbsDown services",
    
    QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy]),
    
    // nsIContentPolicy
    
    shouldLoad: function(contentType, contentLocation, requestOrigin, context, mimeType, extra)
    {
        if (contentLocation.scheme != SCHEME)
            return Ci.nsIContentPolicy.ACCEPT;
        
        // trigger install only on document loads
        if (contentType == Ci.nsIContentPolicy.TYPE_DOCUMENT)
            callLater(100, null, function() { ThumbsDown.installScript(contentLocation, requestOrigin, context); });
        
        return Ci.nsIContentPolicy.REJECT_REQUEST;
    },
    
    shouldProcess: function(contentType, contentLocation, requestOrigin, context, mimeType, extra)
    {
        // no idea if this correct
        return Ci.nsIContentPolicy.ACCEPT;
    },
}


const NSGetFactory = XPCOMUtils.generateNSGetFactory([ThumbsDownService]);
